Cairnfall

You dig the dungeon yourself. There are no corridors in Cairnfall — you cut them with a pick, half a metre of stone at a time, and the rock overhead tracks its own support. Hollow out too much and the ceiling comes down on you: greed is punished by physics, not by a monster.

How it plays

• Every block you take weakens the ceiling. Support falls off with distance from solid rock, and at zero the block drops — 8 damage a hit against your 30 HP, and collapses chain.
• A collapse is always foreseeable. Doomed rock tints red and drips dust about 1.4 seconds before it falls.
• Beams are the answer to greed. One wood plants a support pillar worth +4 support in a radius and re-tints a red ceiling back to safe. You start with 4 and cut more from timber caches.
• Five strata of 48×48×24 solid blocks, each with a depth gate at the bottom. Deeper rock cuts slower and decays twice as fast: a span you can safely open to 10 blocks near the surface holds only 4 down at the Cairn.
• The safe line is the dull one. Straight down always works and pays almost nothing; ore veins, timber and hard-walled relic chambers sit sideways, under ceiling — where grubs, stonebacks and gloamers are waiting, and the same pick that cuts rock is what you fight them with.

Flat-coloured voxels under a single lamp, cold fog where the light dies, and one red tint that tells you how long you have.